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Finding the Fourth Proportional to 124,363.68, 171,621.12 and 67,775.04

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Solution

The fourth proportional to 124,363.68, 171,621.12 and 67,775.04 is: 93,529.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,363.68 : 171,621.12 = 67,775.04 : x
  2. Step 2: Convert to fraction form
    124,363.68/171,621.12 = 67,775.04/x
  3. Step 3: Cross multiply
    124,363.68x = 171,621.12 × 67,775.04
  4. Step 4: Simplify right side
    124,363.68x = 11,631,628,272.84
  5. Step 5: Solve for x
    x = 11,631,628,272.84/124,363.68
  6. Step 6: Final answer
    x = 93,529.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.